Cereal grinding and granulating mill.



E. L. ROMICK.

CEREAL GRINDING AND GRANULATING MILL.

APPLICATION FILED FEB. 8. 1913.

Patented Oct. 27, 1914.

4 SHEETS-SHEET 1.

[/VVENTOR Z Alforney WITNESSES THE NORRIS PETERS c0.v PHOTO-LITHQ,WASHINGTON, Dv c E. L. ROMIGK.

CEREAL GRINDING AND GRANULATING MILL.

APPLIOATION FILED FEB. 8,1913.

Patented Oct. 27, 1914.

4 SHBBTS-SHEET 2.

WITNESSES THE NORRIS PETERS c0. PHUTfi-LITI.'- WASHINGI N. D. c.

. E. L; ROMICK. CEREAL GRINDING AN D GRANULATING MILL. APPLICATION FILEDIEBLB, 1913.

1,1 15 ,245. v Patented Oct; 27, 1914.

' 4 SHEBTSSHEET '3.

[VI-321655155- I By Kai/fg/NVNTO/Q E. L. ROMIOK.

CEREAL GRINDING AND GRANULATING MILL.

APPLICATION FILED FEB. 8,1913.

Patented Oct. 27, .1914.

4 SHEBTSSHEET 4.

WITNESSES: f/VVE/V TOR /Z By f I Al/omay rru- NORRIS PEIERS 60.,PIIOTOYLITH wAs ELIAS L. ROMICK, 0F NILES, OHIO.

CEREAL GRINDING- AND GRANULATING- MILL.

To all whom it may concern Be it known that I, ELIAS L. RoMIcK, acitizen of the United States of America, residing at Niles, in thecounty of Trumbull and State of Ohio, have invented certain new anduseful Improvements in Cereal Grinding and Granulating Mills, of whichthe following is a specification.

My invention relates to improvements in cereal grinding and granulatingmills in which middlings are converted into flour, or in which rye, riceor other cereals are granulated; and the objects of my invention areprimarily to increase the amount of pure fiour produced from a givenamount of wheat or middlings, second to increase the percentage ofprotein and gluten retained in the flour and saved from going over withthe bran and other undesirable residue, third, to more evenly andquickly feed the cereal to the .grinding mechanism, and, fourth, toreduce the time required to produce a given output proportionately tothe number of revolutions of the grinding mechanism. I attain theseobjects by the mechanism illustrated in the accompanying drawings, inwhich- Figure 1 is an elevation of a machine embodying my invention,partly in section and in parts broken away; cross section of the same,showing the outlet; Fig. 3, a plan yiew on the line A-A, Fig. 1; Fig. 4,a detail vertical view of the rotatable grinder removed from the machineand in an unfinished state; Fig. 5 is a plan taken on the line B-B ofFig. 4.

Similar characters refer to similar parts throughout the several views.

A grinding shell 1, supported on a suitable base 2, is covered on itstop by a plate 3 which has an inlet 4 and a spout 5 to conduct thecereal to the interior of the shell 1.

My preferred form for the shell 1 come prises a cylindrical upper cavity6 and a lower chamber 7, of frusto-conoidal form, uniting with thecavity 6 as one receptacle 8, on the line GC, Fig. 1. Within thereceptacle 8 I locate a revoluble vertical grinder 9 made of one piecebut in the form of two frustums of cones, one forming the grinders top,9, reversed and superimposed on the other frusto-conoidal lower part 9on the line DD, Fig. 1. The relative diameters of the chamber 7 and thegrinder 9 are such that the plane of the line, D-D will be Specificationof Letters Patent.

rising 1s swiveled on the other end, 19, of the Fig. 2, a verticalreception Patented Oct. 27, 1914.

Application filed IF'ebruary 8, 1913. Serial No. 747,009.

slightly below that of the line (1-6, for reasons that will behereinafter set forth. I

A shaft 10 extends through the grinder 9, protrudes at both ends and isrigidly at tached thereto and its top end is splined to.

a surrounding tube 11 with which it rotates and in which it can havevertical movement. The tube 11, rotates in and is upheld by a journalbox, 11, attached toplate 8. The tube 11 may be rotated by bevel gears12 and 13 actuated by'a power shaft 14, or in any convenient manner.

The lower end of the shaft 10 is seated in a step box 15, made as a partof a bridgetree 16, which is fulcrumed on a frame 2 from the base 2. Athreaded rod 18 bridge-tree 16. The top of the rod 18 passes throughanear 20, which is also made a part of the frame 2, and carries a lighterscrew 21, by the manipulation of which the bridge-tree can be operatedand the shaft 10 moved up or down to increase or decrease the spacebetween the exterior surface of the grinder 9 and the interior surfaceof the chamber 7 below the line C-C, so as to grind or granulate thecereal to such a degree of coarseness or fineness as may be desired.

The bottom of the chamber 7 is left open so there may be nothing toretard the ground stock; thus preventing the making of soft, greasy ordusty flour, a percentage of which is made when a retarding plate islocated at the end of a grinder or cutter. As a result 'of the backingup of the granules by such a plate a part of the gluten and protein islost or is deteriorated as to quality. At the bottom of the chamber 7 Ilocate a discharge tube 22, Fig. 2.

Referring to Fig. 4, the top 9 of the grinder 9 is shaped aS describedand illustrated in order to form a pocket for the j of the cerealentering the inlet 4. At the largest diameter of the grinder 9 I chamfera plurality of flutings, 23, (preferably four) of lanceolate semi-0voidform and of lengths greater than the combined widths of a plurality ofspiral corrugations, 24, which I cut on the surface of the lower part 9of the grinder 9, in the following manner: Each of the corrugations liesbetween adjacent protruding threads which are beveled downwardly andinwardly on their lower faces and are cut horizontally on their upperfac'es ,,to provide cutting edges on their tops, as illustrated. Eachpair of threads and their intermediate channel, forms a completecorrugated spiral from its starting point at its top to the bottom ofthe grinder 9; but instead of starting one corrugation at the top andcarrying it in a continuous spiraltouching its own last convolution tothe bottom, I spread each successive turn of each corrugation downwardlysuflicient to ermit of starting a plurality of spirals, (from five toten preferably, as may be required) downward parallel to and touchingeach other in groups, as illustrated in Fig. 4:. As a result, a granuleof the grinding cereal, instead of having to travel down a singlecorrugation cut continuously around the conoidal grinder, has to makeonly one fifth to one tenth of the laps of an'ordinary spiral channel toreach the outlet 22. In otherwords a plurality of granules areparalleling each other in their down and out course; and thegranulatedoutput of the grinder is multiplied by the number ofindividualchannels, per revolution of the grinder, by my method ofcorrugating it. The flutings 23 serve to feed the granules of thecereals evenly and rapidly into the mouths of the corrugations channelsas they rotate into receptive po sition.

Those familiar with the art will recognize that I have invented amachine that will increase the output; grind the cereal without theformation of a percentage of mashed and broken granules, which means aproportionate loss of product; and that will increase the percentage ofprotein and gluten conserved in the flour from the middlings or cerealused.

I claim 1; In a device of the character described the combination with agrinder shell which isconoidal at its lower end, of a grinder core core,being vertically fluted about its point of greatest diameter and havingspiral corrugations arranged in groups about its lower conoidal end,sald corrugations communicating with said fiutlngs at their upper ends.

2. In a device of the character described the combination with a grindershell which is conoidal at its lower end, of a grinder core reverselyconoidal at its opposite ends, said core having a plurality of verticalflutings spaced about its point of greatest diameter and being spirallycorrugated in such manner as to form a plurality of cutting ribs andsaid corrugations and ribs being arranged in groups, said corrugationscommunicating with the said flutings at their upper ends, said ribsbeing beveled inwardly on their under sides and presenting horizontalfaces on the upper sides thereof.

8. In a device of the character described, the combination with agrinder shell of a shaft vertically disposed therein, a grinder corecarried by said shaft, the opposite ends of said grinder core beingformed as reverse cones, the lower portion of said grinder core having aplurality of spiral corrugations formed thereabout, and verticalflutings formed in the part of largest diameter of said grinder core,said flutings lying partly in the upper conoidal portion of said core,and partly in the lower conoidal portion thereof.

4:. In a device of the character described the combination with agrinder shell of a .conoidal grinder core, said grinder core beingvertically fluted at its point of greatest diameter, and a plurality ofgroups of spiral corrugations about said core, which corru- .gationscommunicate with the said flutings attheir upper ends 5. In a device ofthe character described the combination of a grinder shell, of grindercore reversely conoidal at its opposite ends, said core having aplurality of vertical flutings disposed about its point of greatestdiameter and being provided with a plurality of groups of spirallyarranged corrugations which form cutting ribs be [tween them.

reversely conoidal at its opposite ends, said i in presence of twowitnesses.

ELIAS L. ROMICK.

Copies of this patent may be obtained for five centseach, by addressingthe Commissioner of Patents.

- Washington, D. C.

